TSL UMD Protocol Tester

An Electron desktop application for testing and diagnosing TSL UMD (Under Monitor Display) protocol communications over UDP and TCP.

Features

• Protocol Support: TSL UMD V3.1, V4.0, and V5.0
• Server Mode: Receive and decode incoming TSL messages
• Client Mode: Build and send TSL messages with visual preview
• Transport: UDP and TCP support for both server and client
• Visual Tally Display: Real-time tally lamp indicators with color support (Red, Green, Amber)
• Interactive Controls: Click tally indicators to set values
• Message Logging: Hex dump and parsed data view for all messages
• Raw Hex Mode: Send arbitrary hex data for testing

Installation

npm install

Usage

# Build the TypeScript
npm run build

# Start the application
npm start

Protocol Overview

V3.1 (18 bytes)

• Address (0-126)
• Tally 1-4 (on/off)
• Brightness (0-3)
• Display text (16 characters)

V4.0 (22 bytes)

• All V3.1 features plus:
• Left/Right Display tallies with color support
• Text color tally
• Checksum validation

V5.0 (Variable length, 16-bit)

• Screen index
• Display index
• Left/Right tally with color
• Text tally with color
• Unicode text support

License

MIT